From: Andrii Nakryiko <andriin@fb.com>
Date: Tue, 17 Dec 2019 15:42:28 -0800
Subject: libbpf: Reduce log level for custom section names
Patch-mainline: v5.6-rc1
Git-commit: 4a3d6c6a6e4d652808729e7a2a8c3774a5a5c814
References: bsc#1177028

Libbpf is trying to recognize BPF program type based on its section name
during bpf_object__open() phase. This is not strictly enforced and user code
has ability to specify/override correct BPF program type after open.  But if
BPF program is using custom section name, libbpf will still emit warnings,
which can be quite annoying to users. This patch reduces log level of
information messages emitted by libbpf if section name is not canonical. User
can still get a list of all supported section names as debug-level message.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191217234228.1739308-1-andriin@fb.com
Acked-by: Gary Lin <glin@suse.com>
---
 tools/lib/bpf/libbpf.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -5886,7 +5886,7 @@ int libbpf_prog_type_by_name(const char
 		return 0;
 	}
 
-	pr_warning("failed to guess program type from ELF section '%s'\n", name);
+	pr_debug("failed to guess program type from ELF section '%s'\n", name);
 	type_names = libbpf_get_type_names(false);
 	if (type_names != NULL) {
 		pr_debug("supported section(type) names are:%s\n", type_names);
@@ -6004,10 +6004,10 @@ int libbpf_attach_type_by_name(const cha
 		*attach_type = section_defs[i].attach_type;
 		return 0;
 	}
-	pr_warning("failed to guess attach type based on ELF section name '%s'\n", name);
+	pr_debug("failed to guess attach type based on ELF section name '%s'\n", name);
 	type_names = libbpf_get_type_names(true);
 	if (type_names != NULL) {
-		pr_info("attachable section(type) names are:%s\n", type_names);
+		pr_debug("attachable section(type) names are:%s\n", type_names);
 		free(type_names);
 	}